Company lists · Data refreshed September 2026

Top 25 Custom software application development services based in France

Name: Custom software application development services based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 944 companies tracked

RevenueBase identified 944 custom software application development services headquartered in France as of September 2026 and tracks 6,273 professional contacts across them, including 2,163 with verified work emails and 185 with mobile numbers. Paris is the largest hub.

This list covers custom software application development services headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 24, 2026 86% judged on-target in blind review

944Companies

6,273Contacts tracked

2,163Verified emails

185Mobile numbers

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The 25 largest custom software application development services based in France

Ranked by team size

Top 25 of 944 custom software application development services based in France, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to custom software application development services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SFEIR	Partial evidence	Neuilly-sur-seine, FranceHQ checked Sep 24, 2026	501-1,000	904 contacts →
	Partial evidence “SFEIR est une Société d’expertise spécialisée dans le développement d’applications sous toutes leurs formes ( web, mobile, IOT, cloud, data, etc.).” Source: RevenueBase Database · checked Sep 24, 2026
2	Castelis	Indirect evidence	Ivry Sur Seine, FranceHQ checked Sep 24, 2026	51-200	97 contacts →
	Indirect evidence “Castelis, c'est l'histoire d'une entreprise en croissance continue.” Source: RevenueBase Database · checked Sep 24, 2026
3	The Codingmachine	Partial evidence	Paris, FranceHQ checked Sep 24, 2026	51-200	93 contacts →
	Partial evidence “The Coding Machine is an IT company that provides bespoke web & mobile development.” Source: RevenueBase Database · checked Sep 24, 2026
4	6tm	Indirect evidence	Rennes, FranceHQ checked Sep 24, 2026	51-200	91 contacts →
	Indirect evidence “6TM accompagne ses clients vers un monde toujours plus communicant grâce à ses solutions web, mobiles et logiciels.” Source: RevenueBase Database · checked Sep 24, 2026
5	4sh	Indirect evidence	Le Haillan, FranceHQ checked Sep 24, 2026	51-200	85 contacts →
	Indirect evidence “4SH est une entreprise de services du numérique.” Source: RevenueBase Database · checked Sep 24, 2026
6	Exomind	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 24, 2026	51-200	69 contacts →
	Partial evidence “EXOMIND est une agence de conseil spécialisée dans la conception et le développement d'applications mobiles et plateformes web.” Source: RevenueBase Database · checked Sep 24, 2026
7	Ipanova	Indirect evidence	Blagnac, FranceHQ checked Sep 24, 2026	51-200	66 contacts →
	Indirect evidence “IPANOVA a pour mission de développer des solutions informatiques innovantes et adaptées aux besoins de nos clients, tout en favorisant une approche collaborative et inclusive.” Source: RevenueBase Database · checked Sep 24, 2026
8	Désirade	Partial evidence	Toulouse, FranceHQ checked Sep 24, 2026	51-200	66 contacts →
	Partial evidence “Désirade est une entreprise de services du numérique spécialisée dans les petites applications depuis 27 ans à Toulouse et Lyon.” Source: RevenueBase Database · checked Sep 24, 2026
9	Ipsosenso	Strong evidence	Paris, FranceHQ checked Sep 24, 2026	51-200	64 contacts →
	Strong evidence “Ipsosenso manages from end-to-end (design, development and outsourcing) e-applications projects of large accounts.” Source: RevenueBase Database · checked Sep 24, 2026
10	Elephant Technologies	Indirect evidence	Nantes, FranceHQ checked Sep 24, 2026	51-200	64 contacts →
	Indirect evidence “Nous sommes une ESN experte, engagée et résolument humaine.” Source: RevenueBase Database · checked Sep 24, 2026
11	Kreactive	Indirect evidence	Lyon, FranceHQ checked Sep 24, 2026	51-200	54 contacts →
	Indirect evidence “Notre métier : Digital Transformers Notre mission : Augmenter votre Valeur!” Source: RevenueBase Database · checked Sep 24, 2026
12	Repply	Partial evidence	La Rochelle, FranceHQ checked Sep 24, 2026	11-50	52 contacts →
	Partial evidence “repply est une société basée à La Rochelle, spécialisée dans le développement d'applications métiers sur les technologies web et mobiles.” Source: RevenueBase Database · checked Sep 24, 2026
13	Wemoov	Indirect evidence	Carquefou, FranceHQ checked Sep 24, 2026	51-200	49 contacts →
	Indirect evidence “QUI SOMMES-NOUS?” Source: RevenueBase Database · checked Sep 24, 2026
14	Elipce Solutions, Votre Spécialiste Logiciel & Data	Indirect evidence	Valence, FranceHQ checked Sep 24, 2026	11-50	47 contacts →
	Indirect evidence “Chez Elipce Solutions, nous concevons, déployons et maintenons des solutions logicielles adaptées à vos enjeux spécifiques, qu'il s'agisse d'outils internes dans tous les…” Source: RevenueBase Database · checked Sep 24, 2026
15	Enovea, Votre Partenaire Logiciel	Indirect evidence	Mont-saint-aignan, FranceHQ checked Sep 24, 2026	11-50	46 contacts →
	Indirect evidence “Fort de ses 4 valeurs : l’excellence, la liberté, la confiance et la créativité, Enovea propose 2 lignes d’expertise depuis sa création à Rouen en 2008 : 1.” Source: RevenueBase Database · checked Sep 24, 2026
16	Vigicorp	Indirect evidence	Saint-herblain, FranceHQ checked Sep 24, 2026	11-50	44 contacts →
	Indirect evidence “Créée en 2007, Vigicorp est une agence nantaise spécialisée dans le développement web et mobile dont la mission est d’accompagner les organisations dans leurs projets de création…” Source: RevenueBase Database · checked Sep 24, 2026
17	Groupefbo	Indirect evidence	La Roche-sur-yon, FranceHQ checked Sep 24, 2026	11-50	42 contacts →
	Indirect evidence “Le GroupeFBO est l'un des leaders du développement informatique en Vendée.” Source: RevenueBase Database · checked Sep 24, 2026
18	Openium	Partial evidence	Clermont-ferrand, FranceHQ checked Sep 24, 2026	11-50	41 contacts →
	Partial evidence “Expert dans le développement d’applications pour smartphones et tablettes (iOS et Android), Openium capitalise plus de 16 ans d’expérience - conseil & stratégie - expérience…” Source: RevenueBase Database · checked Sep 24, 2026
19	Page UP	Indirect evidence	Dijon, FranceHQ checked Sep 24, 2026	11-50	36 contacts →
	Indirect evidence “Nous sommes spécialisés dans la conception et le développement de solutions web et mobiles professionnelles s’adressant aux PME, Grandes Entreprises, Grands Comptes et Secteur…” Source: RevenueBase Database · checked Sep 24, 2026
20	Poyesis	Indirect evidence	Paris, FranceHQ checked Sep 24, 2026	11-50	36 contacts →
	Indirect evidence “Poyesis est une agence digitale spécialisée dans la conception et le développement de solutions web, mobiles et IA sur mesure.” Source: RevenueBase Database · checked Sep 24, 2026
21	Webwag	Partial evidence	Bordeaux, FranceHQ checked Sep 24, 2026	11-50	35 contacts →
	Partial evidence “Webwag mobile is a company specialized in the conception and the realization of mobile application, it creates your mobile applications from beginning to end.” Source: RevenueBase Database · checked Sep 24, 2026
22	Tohero	Indirect evidence	Montpellier, FranceHQ checked Sep 24, 2026	11-50	35 contacts →
	Indirect evidence “Crée en 2015 toHero est un studio de développement spécialisé dans la transformation digitale de ses clients et partenaires.” Source: RevenueBase Database · checked Sep 24, 2026
23	ITS Future	Indirect evidence	Schiltigheim, FranceHQ checked Sep 24, 2026	11-50	35 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 24, 2026
24	LA Mobilery	Partial evidence	Wasquehal, FranceHQ checked Sep 24, 2026	51-200	35 contacts →
	Partial evidence “Depuis 2010, nous accompagnons nos clients pour créer des applications mobiles & des logiciels web C'est en équipe et avec nos clients que nous co-construisons des dispositifs…” Source: RevenueBase Database · checked Sep 24, 2026
25	Dotsafe	Indirect evidence	Bordeaux, FranceHQ checked Sep 24, 2026	11-50	34 contacts →
	Indirect evidence “Société de services à taille humaine et en pleine progression.” Source: RevenueBase Database · checked Sep 24, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: custom software application development services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names custom software application development services.
Partial evidence: Its own public description names part of custom software application development services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom software application development services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 944 custom software application development services based in France

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Custom software application development services based in France at a glance

As of Sep 24, 2026

34.5%Verified-email coverage

2.9%Mobile-number coverage

6.6Average contacts per company

1-10Median size (employees)

18.2%Largest-city concentration · Paris

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

753

11-50

160

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

1,6800–30

45131–60

2161–90

190–180

10180+

Company record updated

Median 77.0d

00–30

1,78831–60

2,88961–90

1,27690–180

320180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among custom software application development services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “custom software application development services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names custom software application development services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among custom software application development services, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 2,163 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 24, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Custom software application development services by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names custom software application development services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many custom software application development services are there based in France?

RevenueBase identified 944 custom software application development services headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SFEIR, headquartered in Neuilly-Sur-Seine, tops this list with the largest team on record.

Which city has the most custom software application development services?

Paris leads with 172 headquartered companies, followed by Lyon (38) and Toulouse (27).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,163 verified decision-maker contacts tracked across these 944 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 24, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.